问题
解答题
鸟类是脊椎动物中唯一会飞的动物．______．
答案
鸟类属于脊椎动物，除了少数鸟类外，绝大多数鸟类会飞，但不是脊椎动物中唯一会飞的动物．比如蝙蝠也是会飞的脊椎动物，但不属于鸟类．而是属于哺乳动物．
故答案为：×
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鸟类是脊椎动物中唯一会飞的动物．______．
鸟类属于脊椎动物，除了少数鸟类外，绝大多数鸟类会飞，但不是脊椎动物中唯一会飞的动物．比如蝙蝠也是会飞的脊椎动物，但不属于鸟类．而是属于哺乳动物．
故答案为：×
China is a large country of agriculture（农业）.We all know that there are more than 800 million 44 in China. China starts to 45 the science of agriculture much earlier than other countries in the world. While people in Europe and America were trying to shoot wild animals and birds for food, farmers in China were 46 the science of agriculture. For example, Jia Sixie, who lived in the Northern Wei period（386-534 AD）,was one of the farming pioneers. After he finished his work in government, he 47 home and spent his time on research into agriculture. He 48 information, did experiments and learnt from the experience of farmers. He wrote a book called Qi Min Yao Shu. The book 49 has 110000 words is about both farming and gardening. This book is 50 to be an important summary（概要）of the knowledge of farming.
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